Home / 515,771,567.72-711,758,086.96-280,819,533.32

Finding the Fourth Proportional to 515,771,567.72, 711,758,086.96 and 280,819,533.32

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Solution

The fourth proportional to 515,771,567.72, 711,758,086.96 and 280,819,533.32 is: 387,527,320.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,771,567.72 : 711,758,086.96 = 280,819,533.32 : x
  2. Step 2: Convert to fraction form
    515,771,567.72/711,758,086.96 = 280,819,533.32/x
  3. Step 3: Cross multiply
    515,771,567.72x = 711,758,086.96 × 280,819,533.32
  4. Step 4: Simplify right side
    515,771,567.72x = 199,875,573,816,843,168
  5. Step 5: Solve for x
    x = 199,875,573,816,843,168/515,771,567.72
  6. Step 6: Final answer
    x = 387,527,320.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.